Returns DOM element where content of the panel is rendered.

<div class="definition">
    el(type)
</div>

<div class="arguments">
    <table>
    <tr>
        <td>type</td>
        <td><b>string</b>, name of the panel</td>
    </tr>
    </table>
</div>

<h4>Description</h4>

The first and only argument <span class="argument">type</span> is the name of the panel. It can be one of the following:
<ul style="margin-left: 50px">
    <li>top
    <li>left
    <li>main
    <li>right
    <li>preview
    <li>bottom
</ul>

Each panel in the layout has multiple elements, such as, toolbar, tabs, resizer and content. Calling <span class="argument">el</span> allows
you to find DOM Element where content of the panel is rendered. It can be used in jQuery to find some specific elements in this panel only:

<textarea class="javascript">
var el = w2ui.layout.el('main');
$(el).find('.title').css('color', 'red');
</textarea>